An entry/exit detection locking device includes a knob axle of a lock and an engaging and holding unit and a retention unit. The knob axle includes upper and lower rotary axles each formed with a notch. The engaging and holding unit is arranged at one side of the knob axle. The retention unit is arranged below the knob axle. The retention unit is connected through a control circuit to a card reader at an outdoor side. Through adjustment, the engaging and holding unit is set in engagement with the notch of the upper rotary axle or the notch of the lower rotary axle to achieve a locked state for exit or entry. Rotating the knob axle for entry or exit triggers the retention unit to make a record of the exit or entry. The engaging and holding unit is connected to the card reader to enable unlocking through card swiping.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The entry/exit detection locking device according to claim 1, wherein the engaging and holding unit is mounted to a bracket, and the bracket is connected to a solenoid valve, the solenoid valve being connected through a control circuit to the card readers at the indoor site and the outdoor site.
3. The entry/exit detection locking device as claimed in claim 1, wherein the base is formed with two receiving troughs, in which the first micro switch and the second micro switch are respectively disposed.
4. The entry/exit detection locking device as claimed in claim 1, wherein the base of the detection unit comprises a wall, the wall being formed with a positioning hole; and the shaft is formed, in a central portion thereof, with a fixing hole, wherein the first wing-shape spring plate and the second wing-shape spring plate are fit to and attached to the shaft and are located above the base, such that a positioning member penetrates through the positioning hole to fit into the fixing hole for positioning.
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April 23, 2021
January 30, 2024
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